海拉尔盆地乌南次凹箕状断陷油藏富集规律研究  

Reservoir accumulation regularity of half-graben-like rift in Wunan sub-sag of Hailar Basin

作　　者：南金浩[1] 黄伟 刘少然[3] 于东旭[1] 孔凡顺[1] 林彤[1] NAN Jinhao;HUANG Wei;LIU Shaoran;YU Doingxu;KONG Fanshun;LIN Tong(Exploration&Development Research Institute of Daqing Oilfield Co.,Ltd.,PetroChina,Daqing,Heilongjiang 163712,China;Development Department of PetroChina Daqing Oilfield Co.,Ltd.,Daqing,Heilongjiang 163002,China;Oil Production Engineering Research Institute of Daqing Oilfield Co.,Ltd.,PetroChina,Daqing,Heilongjiang 163453,China)

机构地区：[1]中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]中国石油大庆油田有限责任公司开发事业部,黑龙江大庆163002 [3]中国石油大庆油田有限责任公司采油工程研究院,黑龙江大庆163453

出　　处：《石油地质与工程》2023年第1期1-9,共9页Petroleum Geology and Engineering

基　　金：国家科技重大专项“大型油气田及煤层气开发”(2016ZX05054)。

摘　　要：箕状断陷受到构造、储层等因素影响,其油藏分布具有一定的规律性。为实现乌东油田有效滚动评价及开发,针对乌南次凹箕状断陷油藏缺乏源-储整体成藏序列认识的问题,通过将乌南次凹主要目的层段构造细分,解析各区带地层、沉积、构造等规律认识,明确源岩、地貌、沉积储层、不整合及断层输导等因素对油藏分布有序性的影响。研究结果表明,洼槽区主要发育岩性油藏(湖底扇砂岩油藏),坡折带主要发育不整合油藏,斜坡区则以受断层影响的断块油藏、岩性-断层遮挡油藏为主。在油藏分布及油气富集特征研究的基础上,提出在油气富集的斜坡区中带开展多层系立体评价,在油气丰度较低的其他区带开展多井型非常规致密储层动用探索,可有效指导区域评价,支撑乌东油田的稳产上产。Due to the influence of structure, reservoir and other factors, the distribution of oil reservoirs in half-graben-like fault depression has a certain regularity.In order to realize the effective rolling evaluation and development of Wudong Oilfield, in view of the lack of understanding of the overall source reservoir accumulation sequence in Wunan sub-sag, the influence of source rock, landform, sedimentary reservoir, unconformity and fault transmission on the orderly distribution of oil reservoirs has been clarified by subdividing the structure of the main target intervals and analyzing the rules of strata, sedimentation and structure in each zone.The results indicate that lithologic reservoirs of sub-lacustrine fan sandstone are mainly developed in the depression area, unconformity reservoirs in the slope break zone, and fault block reservoirs and lithologic pinch out reservoirs affected by faults in the slope area.On the basis of reservoir distribution and hydrocarbon enrichment characteristics, it is proposed to carry out multi-layer system stereoscopic evaluation in the middle zone of enriched slope area, and to carry out exploration on the production of multi well unconventional tight reservoirs in other zones with low oil and gas abundance, which can effectively provide guidance and support for regional evaluation and stable production of Wudong Oilfield.

关 键 词：油藏富集规律 洼槽区 斜坡区 区带划分 控藏因素 成藏序列 

分 类 号：TE112[石油与天然气工程—油气勘探]